In this way, the two radii, orientation and distance for each dimer were obtained (Fig. 5).
The distribution of radii was found to be centered in 20 nm, compatible with the nominal size of the particles.
For the interparticle distances, the distribution showed an increase as expected but then a decrease for distances at which the anisotropy is close to the intrinsic anisotropy of the system.
This mismatch at larger distances is due to the conservative criterion to separate dimers from monomers that fails to identify correctly nanoparticles that couple weakly.
The dimer orientation was uniformly distributed between \(-\pi \)  and \(\pi \) , as expected.
To further test this, we compared the experimental and simulated distributions using a Kolmogorov-Smirnov [1]} statistical test.
The level of significance set at the usual value of 5%.
The expected distributions (Fig. 5, right column) were obtained from the nominal radius of the nanoparticles and Monte Carlo simulation of the adsorption process.
The experimental and simulated distributions for radii and orientation were found in close agreement.
For the interparticle distance, the distributions were found compatible when compared up to 70 nm.
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